Magneto-electric machine



H. W. UHLA MAGNETO ELECTRIC MACHINE.

APPLICATION FILED MAR 25. 1919.

1 345, 83 1 Patented June 29, 1920.

3 SHEETSSHEET I.

ig/4. 7 M WW; 81mm;

H. W. UHL.

MAGNETO ELECTRIC. MACHINE.

APPLICATION FILED'MAR.25,1919.

1,345,331, PatehtedJune 29, 1920.

3 SHEETS-SHEET 2.

I qww Ilia auozmeg H. W. UHL.

MAGNETO ELECTRIC MACHINE.

APPLICATION FILED MAR 25.1919.-

1 345, 33 1 Patent-ed June 29, 1920.

3 SHEETSSHEET 3.

7 I1 1 is filth-encu- UNITED STATES PATENT OFFICE.

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imennro-Emcrmc MACHINE.

Specification of Letters Patent. Patented J 29 1920 Application filed latch 25, 1919. Serial No. 285,041.

To all whom it may concern:

Be it known that I, HENRYW. UHL, a citizen of the United States, and resident of Freeport, county of Nassau, and State of New York, have invented certain new and useful Improvements in Magneto-Electric Machines, of which the following is a full, clear, and exact specification.

My invention relates to magneto electric machines, wherein the block containing the stationary parts of the distributer is made separable from the rotary part of the distributer, to permit this block to be removed for inspection, or repair, without necessitating the dismounting of any other part of the machine, as for instance, in the machine shown and described in my joint application with Eugene Gassmann, filed July 23rd, 1918, Sr. No. 246,300, and issued as Patent No. 1,322,103 on November 18, 1919. This machine is composed of a magneto unit and a dynamo unit, each of the said units being housed, complete with its accessories, in a casing, and the casings are designed to form, when joined together, a recess located next to the housing of the distributer disk, and a spring, or other e uivalent means, is provided to hold the distributer block,

' designed to be set into this recess.

For the successful operation of the machine, it is necessary that the carbon contacts, set in the distributer block project from their sockets beyond the plane of the frontal surface hereof, and an annular rib and groove are provided to prevent moisture from entering in between the parts. The so projecting carbons, and especially the rib, make it necessary to press the distributer block against the spring in the rear thereof, to avoid breaking the carbons, or more particularly the rib, when setting in, or removing the stationary part of the distributer.

The magneto electric machines are used on automobiles, trucks, motor boats, etc., and the drivers or operators of the vehicles, and frequently also the mechanics employed in repair and equipment shops, do not have the proper understanding of the stated requirement. Thus it frequently happens, that the said carbons, and more often the rib, are fractured in removing, or inserting, the distributer block, and the object of my invention is to provide means for effectively preventing it, and thus to insure the safety of these parts of the equipment.

Wlth this object in view my invention consists 1n devising the hereinafter described means for protecting the annular rib, and also the carbon contacts, and for preventing their beingdamaged when the distributer block is being set in, or removed, the said means serving also for indicating that the distributer block is in its right position, relatively to the disk, the rotatory part thereof.

One form of this my improvement, is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a magneto electric machine with the stationary part of the distributer removed;

Fig; 2 is a similar view with the station- I ary part of the distributer partly inserted in the opening; I i

Fig. 3 is a plan view of the inner face of the end plate of the magneto casing with tlie rotatory part of the distributer set in its p ace;

Fig. 4 is a front view of the stationary part of the distributer;

Fig. 5 is a side elevation of the end plate of the magneto casing, wherein the distributer disk is rotatably mounted, and of the distributer block; the parts being in their position when the distributer block is set in, in the recess between the casings, parts of the edge of the end plate being broken off in this figure, to show the parts in their interlocking engagement.

,The annular rib 4 and groove 5 are provided to prevent water from entering between the distributer disk 1' and the carbon contacts 6 of the block 8, the stationary part "of the distributer. The carbons 6 are set in their sockets 7 on springs (not shown), the latter having the function to press the contacts outwardly against the contact segment 8 set in the disk 1" of the rotatory part of the distributer. To effect an intimate contact of the carbons 6 with the segment 8, it is necessary to have the aforementioned springs project the carbons 6 beyond the plane of the front face of the dlstributer block 8. These carbon points 6 cannot be receded into their sockets 7 when the stationary part of the distributer is pushed into, or

is mounted. the recess 10, between the two parts of the casings, is made wider than the thickness of the distributer block a and the spring 9, set in the rear wall of the recess 10 is provided for pressing the block 8 against the disk 2'. This spring is depressed, I automatically, by the means constituting the subject matter of my invention, when the block 8 is being pushed into, or out of the recess.

These means are the protuberances, or abutments, 11 projecting from the face of the block 8, and arranged preferably (but not necessarily) two at, or near, the upper edge, and two at, or near, the bottom edge thereof, and the recesses 12 formed in corresponding positions in the face of the plate 1) of the magneto casing. These recesses 12 register with the rotuberances 11. andthe latter are snugly tted into the former, and when the parts are brought opposite each other, the protuberances 11 enter into the recesses 12 with a snap, the block s.being propelled by the reaction of the spring 9, which was automatically compressed by the act of pushing in the block 8 as explained. During the pushing in of the distributer block 8 into, or pulling it out of, the recess 10, the protuberances 11 actas cams, and contacting with the not recessed edges of the plate 1), remove automatically the distributer' block an equal distance from the face of the plate 1), and compress the spring 9 to an equal extent, to which the protuberances 11 project beyond the face of the distributer block 8. his corresponds to, or slightly exceeds the height of the rib 4, and thus the rib 4 is safely protected, whenever the distributer block 8 is being inserted into, or removed from, the recess. It is very important that the rib 4 remain uninjured so as to preserve the water-tight joint formed by the rib and the groove 5 into which it enters. In the insulator blocks heretofore constructed, the greatest danger of breaking off portions of the annular rib occurred when the block was being removed from its position opposite the rotary part of the distributer-that is to say, when the rib was being pulled out of the groove in which it was seated. This danger is entirely obviated by the lugs or protuberances 11, for as soon as the block is moved slightly out of its normal position within the casing, the beveled lugs 11 begin to ride out of the recesses 12, and thereby cam the block away from the wall containing the recess 5. In other words, the action of the lugs 11 is to push the rib 4 out of the groove 5, whereupon the block is free to be withdrawn without injury to the rib 4.

0 facilitate the operations of inserting the stationary part a of the distributer into, and removing it from, the recess 10, the side edges of the protuberances 1iand of the recesses 12 are beveled, and also the side edges of the 1 )late 1), as shown at 13, and the fillings 11 o insulating material are set in as shown in Fig. 3 of the drawings; these features, however, are not essential for attaining the stated objects of my invention.

I claim as my invention:

1. In a magneto electric machine, the combination with av magneto unit, a high tension current distributer, a dynamo'unit, and a casing composed of two parts wherein the units are housed, the two parts of the casing being fitted together and forming when joined a recess, that portion of the casing wherein the rotary part of the distributer is housed forming one wall of the recess and-having an annular groove, of a block insertible into and removable from said recess, Said block forming the stationary part of the distributer and having an annular rib projecting from the front face thereof, said rib being adapted to enter said groove when the block is in position in said recess, protuberances projecting from the front face of said block a distance equal to or slightly greater than the distance which said rib projects from the front face of the block, that portionor wall of the casing wherein the rotary part of the distributer is mounted being provided with recesses corresponding in position to the position of said protuberances, whereby said protuberances protect said rib when the block is being inserted into or removed from its recess in-the casing, said protuberances entering said recesses when the block is in proper position within said recess in the casing, and means for yieldingly pressing the block against the wall of the casing where the rotary part of the distributer is housed, said yielding means permitting ready insertion and removal of said block into and out of said recess.

2. In a magneto electric machine, the combination with a magneto unit, a high tension current distributer, a dynamo unit, and a casing composed of two parts wherein the units are housed, the two parts of the casing being fitted together and forming when joined a recess, that portion of the casing wherein the rotary part of the distributer is housed forming one wall of the recess and having an annular groove, of a block insertible into and removable from said recess. said block forming the stationary part of the distributer and having an annular rib projecting from the front face thereof, said rib being adapted to enter said groove when the block is in position in said recess, protuberances projecting from the front face of said block a distance equal to or slightly greater than the distance which said rib projects from the front face of the block, that'portion or wall of the casing wherein the rotary part of the distributer is mounted being provided with recesses corresponding in position to the position of said protuberances, whereby said protuberances protect said rib when the block is being inserted into or removed from its recess in the casing, said protuberances entering said recesses when the block is in proper position within said recess in the casing, and a spring set in the wall of the recess opposite the wall where the rotary part of the distributer is mounted, said spring pressing the block against saidlast mentioned wall and permitting the ready insertion and removal ofsaid block into and out of said recess.

3. In a magneto electric machine, the combination with a magneto unit, a high tension current distributer, a dynamo unit, and a casing composed of two parts wherein the units are housed, the two parts of the casing being fitted together and forming when joined a recess,that portion of the casing wherein the rotary part of the distributer is housed forming one wallof the recess and having an annular groove, of a block insertible into and removable from said recess, said block forming the stationary part of the distributer and having an annular rib projecting from the front face thereof, said rib bein adapted to enter said groove when the bloc is in position in said recess, protuberances projecting from the front face of said block .a distance equal to or slightly greater than the distance which said ri pro'ects fromthe front face of the block, sai protuberances being beveled and arranged near the upper and ,lower edges of the front face of said block, that portion or wall of the casing wherein the rotary of the distributer ismounted being provided with recesses corresponding in position to the position of said protuberances, whereby said protuberances protect said rib when the block is being inserted into or removedfrom its recess in the casing, said protuberances entering said recesses when the block IS in proper position within 1ts recess in the wall of the casin art casing, and means for yieldingly pressing the block against the wall of the casing where the rotary part of the distributer is housed, said yielding means permitting ready insertion and removal of said block into and out of said recess.

4:. In a magneto electric machine, the combination with a magneto unit, a high tension current distributer, a dynamo unit, and a casing composed of two parts wherein the units are housed, the two parts of the casing being fitted together and forming when joined a recess, that portion of the casing wherein the rotary part of the distributer is housed forming one wall of the recess and having an annular groove, of a block insertible into and removable from said recess, said block forming the stationary part of the distributer and having an annular rib projecting from the front face thereof, said rib being adapted to enter said groove when the block is in position in said recess, protuberances projecting from the front face of said block a distance equal to or slightly greater than the distance which said rib projects from the front face of the block, said'protuberances being beveled and arranged near the upper and lower edges of the front face of said block, that portion or wherein the rotary part of the distributer is mounted being provided with recesses corresponding in position to the position of said protuberances, whereby said protuberances protect said rib when the block is inserted into or removed from its recess in the casing, said protuberances en-' tering said recesses when the block is in proper position within its recess in'the cas-.

tion and removal of said block into and out of said recess.

' b HENRY W. UHL.

Witnesses: Y

GHARLES S. SKINNER LOUISE KELLER. j 

